As mentioned above, practice, practice and practice.
Conventional/baitcasting style reels all have a spool control (not necessarily the magnets as not all reels have them) and you want that loosened just enough so that your lure will drop slowly on its own, not too fast for a beginner. If you are concerned about the braid, practice with mono first. Get some mono that you are willing to throw away and just go to a local field and cast away, preferably with someone who has done it before. Have a knife handy in case you have to cut away some mono, but it might be worth just using that to practice away from the water so you don't ruin your fishing trip with that set up.
There are a variety of different theories on braid or mono for baitcasting, so that choice is up to you. No matter which you chose, you can expect to become an expert at taking out tangles/birds' nests on such a reel from time to time, as until you truly get the hang of it, because invariably due to wind, different lures for casting and how your line gets wound on the spool, etc., you are bound to experience tangles. Ensuring that your line gets wound on the spool tightly is critical as that will help minimize tangles on the cast, as there is no loose line to become tangled.
That said, it's a great way to fish, strongly recommend it.
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